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Quantitative multivoxel 1H MR spectroscopy of the brain in children with acute liver failure.

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Title: Quantitative multivoxel 1H MR spectroscopy of the brain in children with acute liver failure.
Authors: Sijens PE (AUTHOR), Alkefaji H (AUTHOR), Lunsing RJ (AUTHOR), van Spronsen FJ (AUTHOR), Meiners LC (AUTHOR), Oudkerk M (AUTHOR), Verkade HJ (AUTHOR), Sijens, Paul E1 (AUTHOR), Alkefaji, Heyder (AUTHOR), Lunsing, Roelineke J (AUTHOR), van Spronsen, Francjan J (AUTHOR), Meiners, Linda C (AUTHOR), Oudkerk, Matthijs (AUTHOR), Verkade, Henkjan J (AUTHOR)
Source: European Radiology. Nov2008, Vol. 18 Issue 11, p2601-2609. 9p.
Abstract: Acute liver failure (ALF)-related encephalopathy was previously characterized by MR spectroscopy of single voxels containing both grey and white matter brain tissue. Quantitative multivoxel MRS was used here to compare grey and white matter brain tissue concentrations of glutamate/glutamine (Glx) and lactate in ALF and associate the results with other liver function parameters. Five pediatric patients with ALF-related encephalopathy and five controls, examined after successful liver transplantation, were examined by brain MRI/MRS. ALF patients had higher Glx and lactate concentrations in brain white matter than controls (Glx + 125%: P < 0.01; lactate + 33%, P < 0.05) and higher Glx in grey matter (Glx + 125%: P < 0.01). Within the group of ALF patients positive correlations were found between grey or white matter lactate concentration and serum ammonia (P < 0.05), and negative correlations between grey or white matter Glx and venous pH (P < 0.001). This is the first study presenting evidence of high Glx levels in both white and grey matter brain tissue in ALF-related encephalopathy. The elevations in CNS Glx and lactate concentrations appear to relate to hepatic detoxification (ammonia, venous pH), rather than to liver parenchymal integrity (aspartate aminotransferase, alanine aminotransferase) or biliary cholestasis (bilirubin, gamma-glutamyl transpeptidase, alkaline phosphatase). [ABSTRACT FROM AUTHOR]
Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22European+Radiology%22&quot;&gt;European Radiology&lt;/searchLink&gt;. Nov2008, Vol. 18 Issue 11, p2601-2609. 9p.
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  Data: Acute liver failure (ALF)-related encephalopathy was previously characterized by MR spectroscopy of single voxels containing both grey and white matter brain tissue. Quantitative multivoxel MRS was used here to compare grey and white matter brain tissue concentrations of glutamate/glutamine (Glx) and lactate in ALF and associate the results with other liver function parameters. Five pediatric patients with ALF-related encephalopathy and five controls, examined after successful liver transplantation, were examined by brain MRI/MRS. ALF patients had higher Glx and lactate concentrations in brain white matter than controls (Glx + 125%: P &lt; 0.01; lactate + 33%, P &lt; 0.05) and higher Glx in grey matter (Glx + 125%: P &lt; 0.01). Within the group of ALF patients positive correlations were found between grey or white matter lactate concentration and serum ammonia (P &lt; 0.05), and negative correlations between grey or white matter Glx and venous pH (P &lt; 0.001). This is the first study presenting evidence of high Glx levels in both white and grey matter brain tissue in ALF-related encephalopathy. The elevations in CNS Glx and lactate concentrations appear to relate to hepatic detoxification (ammonia, venous pH), rather than to liver parenchymal integrity (aspartate aminotransferase, alanine aminotransferase) or biliary cholestasis (bilirubin, gamma-glutamyl transpeptidase, alkaline phosphatase). [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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